Pilgrim’s Pride Corporation, based in Waco, Texas, is recalling 4.5 million pounds of fully cooked chicken products that may be contaminated with materials including plastic, wood, rubber, and metal.

According to U.S. Department of Agriculture’s Food Safety and Inspection Service, the chicken products were sold to schools.

The products being recalled display the words “EST. 20728” inside the USDA mark of inspection.

There have been no confirmed reports of adverse reactions due to consumption of these products.

Consumers who have purchased the recalled products are urged not to consume them. These products should be thrown away or returned to the place of purchase.

A full list of items being recalled can be found on the USDA website under Recalls and Public Health Alerts.